Museum of the Game® & International Arcade Museum® Forums

Looking to replace the pp7b I have in my radar scope. It's freshly capped, so is my monitor but either the filter caps aren't doing their job, or some other part in the power supply is failing because I'm getting intermittent waves and jitters in the video. I have ruled out my monitor, and game board by using some of my other cabinets. The issue follows my power supply.

That being said, I'd love to know if anyone has found a modern supply capable of giving the -5v that radar scope needs. Not even the meanwell- rt125a I have in my donkey Kong is capable.

And I would only be using the switcher until
I figure out what's wrong with my pp7b. It's odd because it's freshly capped, and still having that interference. I've even tried ferrite cores on the video cable, and on the cables coming from the supply to the board to see if something else was interfering.

It almost mimicks the "hum bar" issues that pac mans commonly get. Which a modern supply did fix in my pac machine. Maybe a new fuse holder in the supply?
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